Chuck.



PATBNILD MAY 3o, 1905.

H. A. HBUPBL.

CHUCK.

R. l .www ///l l .alhv w C N L mf APPLICATION FILED JULY 8,1904.

NTTED STATES l'atented May 30, 1905.

PATENT OFFICE.

HERMAN A. HEUPEL, OE CHARLEROI, PENNSYLVANIA, ASSIGNOR TO MAOBE'IH-EVANSGLASS COMPANY, OF PITTSBURG, PENNSYLVA-` NIA, A CORPORATION OFPENNSYLVANIA.

CHUCK.

SPECIFICATION forming part of Letters Patent No. 791,027, dated May 30,1905.

Application iled .Tuly 8,1904. Serial No. 215,825.

To {LZ/Z whom, it may concern.:

Be it known that I, HERMAN A. HEUPEL, a resident of Charleroi, in thecounty of Washington and State of Pennsylvania,have invented a new anduseful Improvement in Chucks; and I do hereby declare the following tobe a full, clear, and exact description thereof.

My invention relates to chucks for holding articles of glassware duringthe grinding operation.

The object of my invention is to provide a simple form of chuck by meansof Which articles of different length may be held in the same chuck,whereby one chuck may be adapted for a number of different lengths ofarticles.

To these ends my invention comprises, generally stated, a holder adaptedto receive one end of the article to be ground, said holder having alongitudinally-adjustable seat therein to support the inner end of thearticle and means for supporting' the article projecting beyond theholder, all as fully hereinafter set forth and claimed.

To enable others skilled in the art to make and use myinvention, Iwilldescribe the same more f ully, referring to the accompanyingdrawings, in which- Figure 1 is a side elevation of my improved chuck.Fig. 2 is an enlarged longitudinal section of the same. Fig. 8 is adetail of the ring-seat for supporting the inner end of the article tobe ground.

Like numerals indicate like parts in each of the figures.

In the drawings the numeral 2 designates a portion of a suitable frameor support, at one end of which is mounted the head-block 3. Journaledwithin the head-block 3 is the shaft 1, and mounted upon said shaft isthe pulley 5, driven by the belt 6. Mounted on the shaft 1 is the holderor drum 7, divided by the internal partition 8. Secured to thispartition 8 is the threaded coupling 9, with which the threaded end ofthe shaft 4: en-

gages.

Mounted upon the holder 7 is the sliding sleeve 10, said sliding sleevehaving the annular groove 11, with which the forked arm 12 engages. Alever 13 is pivoted to the forked arm 12, and bythe operation of saidlever said sleeve is moved back and forth on the holder 7. The sleeve 10has the tapering or conical portion 111, which is adapted to engage theinner ends of the arms 15, said arms being pivoted at 16 to lugs 17 onthe holder 7. Three of these arms are illustrated, although it isapparent that any number of such arms may be employed, according to therequirements. The inner ends of the arms 15 are normally held in contactWith the eX- terior of the holder 7 hy means of the springs 18, securedat 19 to the outer ends of the arms 15 and bearing against the holder 7at their inner ends. The outer ends of the arms 15 are provided with theblock-holders 20, adapted to receive and retain securely therein theclamping-blocks 21. These clampingblocks may be formed of any suitableelastic material-such as cork, rubber, &c.and the holding-faces of saidblocks are made to conform to the contour of the article to be clampedthereby. rlhese holders 20 are provided with the tightening-screws 22.

Within the cavity 23 of the holder 7 is the split ring 24, which isadapted to engage the inner walls of said holder. A screw 25 engages thethreaded seats in the free ends of the ring 24, said screw beingtapering, so as to act to expand said ring to fix it securely in.position at any desired point within the drum or release it therefrom,so that it may be moved to any point within said drum. The ring 211 isprovided with the shoulder 26, adapted to receive the elastic seat 27.The shape of the seat 27 may vary according to the contour of thearticle to be seated therein.

Mounted on the frame 2 is the sliding tailstock 29, which has the shaft30 journaled therein. A pulley 31 on said shaft 30 is driven by a belt32. Any suitable mechanism may be employed for feeding the tailstock 29toward the article to be ground or withdrawing the same. Mounted on theend of the shaft 30 is a suitable grinding-wheel 33.

In the operation of my invention the ring 24 is iirst adjusted at theproper position within the holder 7, the position of said ring thereinbeing regulated by the length of the article to be ground, while at thesame time clamping-blocks of suitable size and dimensions are securedwithin the arms 15. The article 28 to be ground, which in the presentinstance consists of a bulb or shade closed at one end, is inserted inthe chuck, with its inner end fitting in the seat 27, whereupon theoperator throws the lever 13 to the position indicated in full lines inFig. 1, which acts to advance the sleeve and throw the outer ends of thearms into contact with the outer end of the shade 28, as clearlyindicated in Fig. 1. The grinding-Wheel 33 is then put in operation andis fed forward, so as to keep in contact with the end of the shade to beground until the shadehas been ground to the proper degree, whereuponsaid grinder is withdrawn, and the operator by throwing the lever 13into the position indicated in dotted lines, Fig. 1, releases the arms15 from the shade, whereupon said shade is free to be removed andanother inserted in its place, when the operation is again repeated. Incase it is desired to grind articles of a shorter or longer length thering 24 is freed by unscrewing the screw 25,- and said ring is thenadjusted at the proper position within the holder 7 and secured in thatposition.

What I claim is- 1. In a chuck for holding articles of glassware duringthe grinding operation, the combination of a holder having alongitudinallyadjustable seat to receive the said article, and means forsupporting said article in said seat.

2. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder having a longitudinallyadjustableseat to receive the inner end of said article, and means for supportingthe outer end of said article.

3. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, a longitudinally-adjustablesupport within said holder adapted to receive said article, and meanscarried by said holder for supporting the said article in said seat. l4. In a chuck for holding articles of glassware during the grindingoperation, the com-l bination of a holder, a split ring engaging saidholder and forming a seat for said article, and means for supportingsaid article in said seat.

5. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, a split ring within said memberforming a seat for said article, a screw engaging said ring, and meanscarried by said holder for supporting said article in said seat.

6. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, a longitudinally-adjustableelastic seat for receiving said article, and means for supporting saidarticle in said seat.

7 In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, a longitudinally-adjustablesupport within said holder to receive said article, an elastic seat insaid support, and means for supporting said article in said seat.

8. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder having a longitudinallyadjustableseat to receive the inner end of said article, and means carried by saidholder to support the outer end of said article.

9. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, means for supporting the innerend of said article, and arms carried by said holder adapted to supportthe outer end of said article.

10. In a chuck for holding articles of glassware during the grindingoperation, the co'm-k bination of a holder, a longitudinally-adjust#able support for supporting the inner end of the article, swinging armson said holder, and means for throwing said arms into contact with theouter end of said article.

11. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, a longitudinally-adjustablesupport for supporting the inner end of said article, spring-actuatedarms, and means for throwing said arms into contact With'the outer endof said article.

12. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, a longitudinally-adjustablesupport for supporting the inner end of the article, and arms carried bysaid holder adapted to support the outer end of said article, said armshaving cushioned ends.

13. In a chuck for holding articles of glassware during the grindingoperation, the combination of a holder, means for supporting the innerend of the article, pivotal arms carried bysaid holder adapted tosupport the outer end of said article, and a sliding sleeve on saidholder adapted to engage the inner ends of said arms.

14. In a chuck for holding articles ofglassware during the grindingoperation, the combination of a holder, means for supporting the innerend of the article, pivotal arms carried by said holder adapted tosupport the outer end of said article, and a sliding sleeve having aconical portion adapted to engage the inner ends of said arms. d

In testimony vwhereof I, the said HERMAN A. HEUTEL, have hereunto set myhand.

HERMAN A. HEUPEL.

Witnesses:

A. N. HEPLER, EMMA VERNON.

IOO

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